68 
PSTCHID^. — DEEPAIfULID^. 
PTEEOXYS, g. n. 
Male. Antennae bipectinated, with long plumose branches decreasing in length distally. 
Head small ; thorax and abdomen slender. Fore leg with no tibial spine. Fore wing long 
and narrow ; the two internal veins anastomosing, but sending no branch to inner margin ; 
the third and fourth subcostals stalked. Hind wing with a bar between the costal and sub- 
costal nervures. Veinlets in the cell of both wings forked. (See p. 65.) 
Pteroxys goniatus. (Plate CLIX. fig. 20 & Plate CLXXVI. fig. 14.) 
Expanse $ ^ inch. 
Male. Uniform dark brown ; the wings sparsely covered with brown hair-like scales ; the 
apices of both wings pointed. Fore wing with the upper radial absent. Hind wing with 
the lower subcostal absent. 
Larva-case formed of comminuted fragments of yellowish-grey vegetable matter, which 
are all directed towards the pointed posterior end. The larva feeds on Zinziberaceee , 
grasses, &c. 
COSSIM. 
Zeuzera postexcisa. (Plate CLIX. fig. 18.) 
Expanse ^ 2 inches. 
Male. Antennae black, the shaft white towards the base ; vertex of head, thorax, and 
abdomen white; collar blue-black at vertex; tegulse with one spot; pro-, meso-, and meta- 
thorax each with a pair of spots, the last with an additional medial spot ; abdomen with one 
spot on vertex and two pairs of lateral spots to each segment. Fore wing white, with series 
of numerous small blue-black spots in each interspace, those in the interspaces between the 
first median and fifth subcostal nervules being obsolescent except the marginal series ; the 
spots in the cell few. Hind wing with a deep excision on the outer margin between the 
interno-median and first median veins ; a series of obsolescent spots in the interspaces between 
the first median and costal veins ; a very prominent blue-black marginal streak at the 
excision ; small spots at the second and third median veins and a narrow streak at apex. 
The venation is similar to that of Z. cesculi, except that the third subcostal nervule of 
the fore wing is given off after the end of the cell instead of at the end ; whilst in Z, coffece, 
which it externally much resembles, the neuration of the hind wing differs considerably. In 
the Indian species the mouth-parts are totally absent, whilst in Z. cesculi they are rudimentary. 
DREPANULID^. 
Drepana bracteata. (Plate CLX. fig. 5.) 
Expanse ? 2^ inches. 
Female. Fawn-colour. Fore wing irrorated with bluish-silvery scales, especially imme- 
